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Chevrolet TSB #14876
2015 Chevrolet Silverado 3500
TSB Document:
Affected Component: POWER TRAIN:AUTOMATIC TRANSMISSION
- Summary
- 14876 - SERVICE UPDATE. ON CERTAIN VEHICLES EQUIPPED WITH 8-SPEED AUTOMATIC TRANSMISSION (M5U), THE CUSTOMER MAY COMPLAIN ABOUT HARSH SHIFTING. THIS CAN OCCUR IF THE VEHICLE EXPERIENCED MULTIPLE TRANSMISSION REPROGRAMMING EVENTS DURING MANUFACTURING, CAUSING THE CALIBRATION TO OVER-ADJUST THE SHIFT PARAMETERS. THIS BULLETIN PROVIDES A SERVICE ADAPTIVE LEARN PROCEDURE THAT SHOULD BE RUN TO RESET THE CALIBRATION TO THE BASELINE PARAMETERS.
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